Steel fin tubes
Welded Steel Single and Double finned tubes
An economiser with resistance welded straight fin tubes from Ekströms Värmetekniska AB is often the natural choice solid fuel or oil fired boilers. It combines the flexability in shape, geometry and materials in relation to fuel type, dust load and temperatures. Ekströms offers single and a double tube design of steel finned tubes.
This kind of heat exchanger weight less than the casted iron alternative and gives a more compact design compared with plain tubes, which also means reduced investment costs. In line arrangement of tubes gives easier maintenance and cleaning. Absolute parallel channels between the fins through the whole economiser are extremely important for reduced fouling.
Double fin tube
Single fin tube